Do not trust this blog (fully)
You will often find things written in books, webpages, information sheets, course notes, and webpages (including this blog) – which tells you what is written […]
EN338
What is the density of wood?
This is one of those simple sounding questions that has a lot of possible answers. For now, let’s keep it simple and ask something more […]
When is a standard not a standard?
…or why you should not buy EN 14081-1:2016. As we have discussed before (here and here), Harmonized Standards have a special status in that they […]
Why grading isn’t about the grade
The strength grading of timber is not about the strength grade – it is about the properties of the timber. A strength grade (or, more […]
5th percentile shear modulus?
In the current version of Eurocode 5 (EN 1995-1-1:2004+A2:2014) you can find equations that relate to the lateral torsional buckling of beams. Equation 6.31 gives the […]
Thinking beyond strength classes
This paper summarises the processes and normative requirements involved in grading of structural timber, and outlines a number of areas in which matters may be […]
Making the grade
This post is a ‘director’s cut’ version of Dan Ridley-Ellis’s (@flyingquercus) presentation at the Institute of Chartered Foresters 2016 National Conference “The Timber Supply Chain – Dynamics and […]
Grade in Britain
For a more up-to-date post on properties see Grade in Britain revisited. Introduction We looked at British spruce in a previous post. It is, for […]
Strength grading of timber explained
The paper “Strength grading of sawn timber in Europe: an explanation for engineers and researchers” by Dan Ridley-Ellis, Peter Stapel and Vanesa Baño is now published (online […]
The mysterious “TG1”
This week, the committee known as “TG1” met to evaluate some new settings for machine grading and visual grading assignments for EN1912. TG1 stands, simply, […]